Both final and const prevent a variable from being reassigned (similar to how final works in java or how const works in javascript). The difference has to do with how memory is allocated. 对于初学者，在这里有三个词汇需要注意的： last， final， latest last, final 都 可指顺序上 的“最后”，有时可换用。如： 1.
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215 what is the purpose of the final keyword in c++11 for functions? (it does not mean that all references to objects of the class would act as if they were declared as final.) when it's useful to declare a class as final is. The final / last word in this dictionary is zoom.
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I understand it prevents function overriding by derived classes, but if this is the case, then isn't it enough to declare. A final class is simply a class that can't be extended.
